Type-writing machine.



L. D. BROUGHTON.

TYPE WRITING MACHINE.

APPLICATION FILED APR. 9, 1910.

Patentd July 15, 1913.

2 SHEETS-SHEET 1.

. L. D. BROUGHTON.

TYPE WRITING MACHINE.

APPLICATION TILED A119, 1910.

Patgnted July 15', 1913.

2 sums-S 2' [III WIIIIIIIIIII ment '(liiring LYI/l'r'L-Il' DAVIE BROUGHT-3K, OF HABTFQBD,

TYPEWRITEE CGKVIEANY, OF HEW 393K CQNNECTIBUT, ASSEGNQB T UNDER-V1601! N. 11, CORPOBhTZON 0F DELAYVAEE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented July 1933,.

Application filed April 9, 1910. Serial No. 554,467.

To (ZZZ whom it may concern Be it known that L LICMAN D. BROUGH- TON, a citizen of the Unitecl States, residing in Hartford, in the county of Hartford and State of Cenneet'ic it have invented certain new and useful Improvements in TypelVritin Machines, of which the following is a speci cation.

The present invention relates to brake devices for ehecking or retarding typewriter carriages when the same are released to run 0r jumpforward in tabulating Work, the primary object, of the ini'ent-ion being to pr-Qvide av simpie, eiiective and durable check for this purpose.

The carriage is provided with a rack parallel to the letter-feed motion thereof; a, pinion on the framewerl; of the machine is mow able into and out of mesh with said rash, and is ,cqnneeted with an sir-check device, whereby upen the engagement ef th= pinion with said rack a cl the release if the earriage from ihe'contrel of its esezipemnuent mechanism; to run freely under the influenee of its driving spring, said sir-check will retard the carriage te'ithe desired extent.

The device is effective at every stroke of the piston and an apggmximately uniform resistance {dependent upon the speed 0f the eerriage) is secured to the cerriage=movethe piseen strokes.

' In the accompanying; drawings, Figure 1 s rear perspective View, with parts nmitand broken away. Fig 2 is a rear elein seetion wiu parts 3 a sitle el *etion showing lg aged, l

iew. hi1twith the reek. A

ration, 9211* fer the ve l-t} aiezio iiiiietlen 'Fhe which are fulcrumed it 9 anti have buttons 10.

The reference numeral 1.1 denotes a rack;

bar attached to or berne by arms l2, (by which the rack 3 is supported) the melt-bar 11 being parallel to the line of letter-feeding V thereon, which disk is pr vided with a (rank pin or wrist 18. A pistcn rhtl 19 is mini-ectetl with said pin 18 and with a piston 19 which-is adapted to move in'the cylinder 20. The cylinder 20 is pivntnlly connected by a screw 21, which passes through an eye 22 (in the cylinder 20 with the block 23, whieh is connected by set screws 24 with the shaft 16 and the screwfll in order to muse the block 23 to move as one with the hearing 15 aforesaid.

it will he observed that the described e0nstriictifin enables the parts named to rock with the shaft lfi while permitting them t0 operate in all I The rod 19 passe; 1 evliritier- K 1 need, as shown the er m0 is provided with peiiorntieri-S a i lif-fi6ib to allmveir to enter therein 0 and e therefrom. Gr at communication between of the piston T211137 he use to have slew escape of airri'em in from 0f she moving piston so that the ist-en may actas an airmheel clevice fer maths motinn of the free carriage WUZ'l-L i An arm n frame 1 time.

; crank 18, and to work rock ng-on the pin 21 The shaft 31 has a universal bar 32 rigidly connected thereto, which bar 32 normally rests on shoulders 33 on the thrust-rods 6S0 as to be moved upwardly by any of said rods 6 that may be operated.

Springs 34, connected at their upperends to the rods 6 and at their lower ends to a rod 35, draw the thrust-rods 6 downwardly, while the weight of lied upon to return the frame 15, 16, 23 to the normal position thereof shown in Fig. 4.

The operation is asf'ollows: On the depression of any key 10, the corresponding denomination stop 6 is raised to intercept the next stop 4, carriage 1 is the kind, from the control of the escapement-mechanism and is drawn toward the left by the usual spring drum and connections (not shown); The escapement mechanism comprises a rack 36, which is lifted from an escapement pinion 37 by means of a lever 38, connected by link 39 to arm 40, extending from rock-shaft 31. The speed of the carriage toward the left When so freed, is checked or, cont-rolled by the action of the air-check devices hereinbefore described, since the pinion 13 is thrown forward into mesh with the rack 11 whenever any key 10 is depressed, ofv the carriage-moving sprin rotate the pinion 13, 1ts shaft is caused to 14, and the and forth in the cylinder 20, the cylinder 20 during such action. The mg vement of the air through the holes a, 72, being relatively slow, the carriagespring is prevented from driving the carriage toward the leftwith undue, speed,- as long as the key 10 is kept depressed to the full extent; but the carriagemoves (with suflioient speed) until stop- 4 collides with the tip-raised stop 6 whereupon, the carriage is brought to rest. On the release of the depressed key 10, the-parts are returned to their normal positions, and the carriage again put under the control of the letterspace feed mechanism.

The keys 1Q usually represent theorder of places from units to hundred millions, the point and twodecimals, and as many column-stops fields or columns to be written.

It will be notedthat there are several holes, a. b, at each endof the cylinder, and that the moving piston covers themin succession toward the end of its motion, thus increasing the compression at such time over what it is when such apertures are still uncovered. The apertures being small, there is compression in front of the ton, as the smallness of such. aperturesallows air to escape slowly, only from such front. The relatively slow movement of the the parts may be re while at the same time the freed, as usual in machines of' whereby the power the piston 19" back' 4 are provided as there are moving pis-' piston as it nears the end of its stroke, is

Having thus described my invention, I v

claim: 1

1. In a: typewriting machine tabulator mechanism the combination with the carriage, of a rack thereon, a rocking frame, a. pinion journaled on said rocking-frame and adapted to engage with saidrack, a crank-pin connected with said pinion, a piston connected with said crank-pin, an aircheck cylinder in whichsaid piston moves;

said cylinder closed at both ends, and means 1 provlding an escape of air from infront of the piston at every strokethereof varying theescape as the piston reaches the end of its stroke. v

2. In a typewriter tabulating mechanism, the combination with thecarriage, of a rack thereon, a pinion movable into and out of mesh with said rack, a crank-pin connected with said pinion, a piston connect-ed to said crank-pin, a cylinder in which said piston moves; saidcylinder closed at both ends, and means providing an escape of air I from in front of the piston varying the escape as the piston reaches the end of its stroke; l

3. In a typewriter tabulator mechanism, the combination with the carriage, of a rack thereon, a rocking frame, a pinion journaledon said rocking into and out of ing air check ton therein, connections between said pinion and said piston; said cylinder closed at both ends, and means providing an escape of air in front of the piston varying the escape as the piston reaches the end of its stroke.

frame and moved thereby mesh with said rack, a rockcylinder on sald frame, a p1s 4. In a typewriter tabulator mechanism, I

the combination with a pinion movable into and out of mesh with said rack, an air-check device including a piston and cylinder; and controlling the rotation of said pinion and connected therewith through-a" crank-pin, a column-stop ,a counter stop movable intoand out of t e path of the "column stop, and connections whereby' onthe operation and release of the counter sto said pinion is moved bodily toward 'ngl'g. onrsaid first-named rack; said cylin er closed alt-both ends,.and means providing'ga'slow escape of a from in front'of the ipiston at-every stroke thereof and varying said escapees the piston reaches the end of its s rokey 5. In a tabulator mechanism, the vcombination with the carriage, of a rack thereon, a rock-shaft on 'theifiqmework of the machine, a fag i'lght' gangles" to said the carriage, of a rack,

sheft, a she-ft jour'naled in said hearing, a pinion and a crank connected to said lastnamed shaft, :1 cylinder, a pivotal COHDQC- tion' between said cylinder and said rocksliait \r'lierehv said cylinder moves bodily on the rockin said rock-shaft and also swings independently thereof, a piston in id cylinder and connected with said crank to be lim ted thereby, and means providing a to lf escape or air from in front of the moving piston. I

\3. in a talonlator mechanism, the combination with the carriage, of a rack thereon, a rocoshatt parallel to said reels-"an arm from said shaft provided'with a hearing at right angles to said shaft, a shaft in said bear' a pinion on said sha'itt adapted to mesh "with said crank, a crank-pin connected with said pinion carrying shaft, a pistonrod connected i said crank-pin, a cylinder for said piston, a pivot connection between said cylinder and said rock-shaft,

means for allowing a slow escape of air from in front at said piston as it moves to and fro in saidcylinder, a s ies of thrust-rods, coltnnnstops for co-acticn with said rods, id means whereby said thrust-rods actuate :l rock shaft. r

T. in a tshnletor mechanism, the combination with the carria of a rack thereon, 2

"5 l pinion adapted to mesh with said rack, a rank-p t connected 'ith said pinion, an linder and piston, a rod conpiston with said cranlcpin, a connected by a hearing with said d by pivot with said'cylinder, ps on said carriage, thrust-rods :r eo-action 11 said sto s, and means carriage, of a rack thereon, rocking tra ns, a pinion journaled on said nic and moved. thereby into and out of Li said rack, a rocking air-check Lin on said frame, a con- 211 said piston and, said pinion and scans gi-r widing a slow escape of air in ad sci-1i ton or every stroke varying s .l esmpe as the pisthe end of its stroke.

9. in a tahnlatr r mechanism. the combination with the carriage. of a rock thereon. a lOClIlfifZiI'llfiG, a pinion journaled on said rocking I no and adapted to mesh with said r2- I pinion, p air-check n c nnected with said pin. on

cer in. which saiai piston means for allowi or a slow from in front'ofsz d i ole thereof and-Vary lston reaches end ator mechanism, the com;.-l- Q nation with the carriage, of a rack thereon, a pinion movable into and out of mesh with said rock, a crank-pin connected with said pinion, and an air-check device including apiston and cylinder and connected with said crank-pin, and having means to vary the air pressure on the piston to correspond with the varying leverage between the rack and piston, and. thereby provide an approximately uniform resistance to the carriage increment throughout every stroke of the piston. v

11. The combination of a carriages rack, a pinion normally out of mesh with said rack, a frame Whereon said pinion is mounted for movement into mesh Withsaid rack, a cylinder-swiveled upon said frame, a piston in said cylinder, a Wrist connected to said pinion,- and a piston rod pivots-Ll to said wristand Working insaid cylinder to form a check or governor for said carriage.

12. The combination of a carriage, a rack, a pinion normally out of mesh with said rack, a frame whereon said pinion is mounted for movernentinto mesh with said rack,

'a cylinder swiveled upon said frame, a piston in said cylinder, a Wrist connected to said pinion, a piston rod pivoted to said Wrist and Working in said cylinder to form a check or governor for said carriage, and a carriage releasing mechanism connected to said frame tomove said pinion into mesh with said rack when the carriage released.

13. A governor for a typewriter carriage comprising an air cylinder, a piston therein, and means dependent upon the movement of said carriage to reciprocate said piston; said cylinder closed at its ends and having perforations atsaid ends, one perforation ateach end being nearer said'end than another.

14:. A governor for a typewriter carriage comprising an, air cylinder, a piston therein, and means dependent upon the movement of said carriage to reciprocate said piston; said cylinder closed at its ends and having perforations at said ends; the perforations at each end of the cylinder being placed one in edrancc another. so that said piston shall close one openin ct'ore rim-hing .aw other. 4

15. The coinhinatiani with a typewriter carriage, of a governor thm'ctozx cc orisiiig a cyliuter, a piston the ein. and means do pendent Upon the movement. of the carriage o reciprocate said piston, said cylinder closed at its ends; and means providing: esc pe of tlnid varying with the posititm of the piston in advance of said piston upon both rokes thereof.

t pewriter c, of a governor therefor. comprising a 2 er, a piston therei;, means p upon movement at she carriage c cl C linder nation with nation with tabulator 45 Y [releasable by said universal bar, an arm fast within a cylinder,

closed at its ends; and means providing slow escape of air varying with gradually increasing air pressure in advance of said piston upon both strokes thereof.

l7. The combination with a typewriter arriage, of means to govern its speed in eluding a piston, means to connect said pision to said carriage to cause the piston to reciprocate while the. carriage travels. the speed of the piston relative to that ol' the carriage being variable, and means to increase the press1.u-e m the piston as its speed decreases and thereby enable said.piston thrmighout each stroke thereof to uniformly check the speed of said carriage.

18. In a typewriting machine, the coinl ination with a traveling platen and means driving it, of an escapenient controlling iix. an escapemenl' release, a piston to retard the carriage, a. cylinder in which said piston travels, and a plurality of mit a fluid in front of the piston to travel through them and arranged to be successively rendered inoperative as the piston travels.

19. In a typewritingmachine,the combia traveling platen and means driving it, of an escapement controlling it,

an escapement release, a shaft turned by said I carriage, ,a piston reciprocalted by said shaft, and a cylinder in Which said piston moves, having means for increasing the resistance to travel of said piston as it approaches each end of its stroke faster than that due to the ompression of fluid in it.

N. In a typewriting machine, the combillatlOIl with a traveling carriage, of a reciprocating piston, and a cylinder in which said piston travels, comprising means for letting a fluid escape from the front of said piston; said'means varying in area as the piston approaches the end of its stroke.

21. In a typewriting machine, the combikeys and a universal bar operated thereby, of a traveling carriage to said universal bar, a rack fixed on the carriage, a pneumatic brake for. said carriage comprising a gear wheel meshing withsaid rack, a piston connected to the gear Wheel, a cylinder, and a link joining said universal bar arm to said cylinder for positively moving said brake into and out/of mesh with said rack as the tabulator keys move.

22- In a typewritingmachin, the combi- 1 nation 'witha traveling carriage, a tabulat- .ing key and a rack on said carriage, of a universal bar moved by saidtabulatmg key, a brake .compr ising-agpiston reciprocating a gear'jvheel drivin said piston, a link joining said universal or to positively shift said gear wheel into mesh with said, rack with theoporation of said l I. g.

key, and means operated by the universal bar independently of said link to release the carriage.

23. In a typewritingmachine, the combi nation with a travrling carriage and tabu lating keys therefor, of a rack on said can riage, av universal har moved by said ta l ulilting keys, a rock frame, a gear wheel mounted in said rock frame, a link extend: ing from said universal bar to swing said rock frame to cause said gear xvh with said rack at every operation of a tabulating key, anda cylinder pivoted in said rock frame comprising a piston actuated by said gear wheel. 24. In a typewriting machine, the combination with a traveling carriage and tabulating; keys therefor, of a universal bar operated by said "tabulating keys, a rack on said carriage, a rock frame on the frame, of the typewr ter, a cylinder pivoted in said rock frame, Wheel'operating said piston andadapted to engage said rack, and'a link extending from said universal barto said rock frame to positively move said gear wheel into and out of mesh with said rack.

eel to mesh a piston in; said cylinder, a gear nation'with a traveling carriage and a tabulator key for positioning said carriage, of a rack upon said carriage, a gear wheel adapted to mesh with said rack, a piston operated by said gear wheel, a substantially symmetrical cylinder within which said piston I reciprocates, and a series of vents ateach end of the cylinder in position to be succcsively cut off by the piston.

26. In a typewriting machine, the combination witha traveling carriage'and a tabulator key for positioning said carriage, of a universal bar operated by said tabulator key, a rack upon said carriage, a gear wheel adapted to mesh with said rack, a pin having a fixed relation to said gear wheel; a piston rodlengaginglsaid pin, a cylinder in which said piston-rod plays, a pivot around which said cylinder vibrates as the piston is moved by said "pin, and a link extending from said universal bar for positively moving' said gear wheel rack.

into mesh with. said nation witha traveling carriage'and a tabulator keyifor positioning said carriage, of a i universal bar operated by said tabulator key, a rack upon said carriage, a rock frame, a gear wheel. on said rock frame'adapted to mesh with said rack, a pin'having a fixed relation. to said gear wheel, a piston rod engaging said pin, a cylinder in which said piston rod plays, a pivot' around which said cylinder vi rates as the piston is moved b said pinyanda link extending from sai universal 'barto'said rock frimie for 'po sination with a traveling carriage and arack thereon, of a rock frame, a gear wheel journaled in said rock frame, a pin having a fixed relation to said gear wheel, a pistonrod journaled on said pin, a cylinder in which said piston operates, and a pivot on said rock frame pernendicular to the axis of the rock frame and on which said cylinder swings. V

Copieaof this patent inay he obtained. for

30. In a typewrit-ing machine, the combination with a traveling carriage and a rack thereon, ofa gear wheel adapted to be driven by said rack, a'pin having a fixed relation to said gear wheel, and-a pneumatic piston driven directly by said pin.

31. In a typewriting machine, the combination with a traveling carriage and a rack thereon, of a gear wheel adapted to mesh with said rack, a rock frame on which said gear wheel is mounted, a shaft on said rock frame parallelto the carriage, a lug forming a bearing for said shaft and also receiving the trust of said carriage, and a braking device of which said gear wheel forms a part.

,LYMAN DAVID BROUGHTON.

Witnesses:

W. M. BYORKMAN. Monro G. TALCOIT.

live cents each, hy addressing the Commissioner of Patents, Washington, D. C. 

